Novel nanoscale EUV light sources
In the recent years, researchers have realized that the strong field-concentration of plasmonic structures allows us to re-think the way we can achieve highly nonlinear light conversion processes. An example is the generation of extreme-ultraviolet (EUV) radiation in a highly nonlinear process starting with fundamental visible or near-infrared radiation. Traditionally, EUV radiation is produced in large synchrotron facilities, or based on high-power amplified femtosecond pulses. Plasmonic structures allow a much simpler, more compact approach to generating this type of radiation, which is useful in chemistry, materials characterization, and biology.